[Решено] iyzico payment gateway doesn't work in second language

we have a problem which we can not understand why? When you purchase any product from the default language: the payment gateway's popup (where users enter credit card info etc.) appears and the process will be complete without any problem. But when you switch to the secondary language (Turkish) the checkout page skips the popup and marks the order paid (but it is not).

Solution: Unable to reproduce in clean install